21118360

素因数分解:

$2^3\times 5^1\times {\mathrm{683}}^1\times {\mathrm{773}}^1$

素因数の和:1467

約数の個数: 32

約数和(自身を含む): 47647440

約数和(自身を除く): 26529080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 683, 773, 1366, 1546, 2732, 3092, 3415, 3865, 5464, 6184, 6830, 7730, 13660, 15460, 27320, 30920, 527959, 1055918, 2111836, 2639795, 4223672, 5279590, 10559180, 21118360]

約数ペア:

[(1, 21118360), (2, 10559180), (4, 5279590), (5, 4223672), (8, 2639795), (10, 2111836), (20, 1055918), (40, 527959), (683, 30920), (773, 27320), (1366, 15460), (1546, 13660), (2732, 7730), (3092, 6830), (3415, 6184), (3865, 5464)]